3. Plug the supplied power cable into a properly grounded -48 V dc source. For
maximum protection against power loss, connect each of the two dc power
supplies to a different power source.
4. Continue with “Powering on the EXP810” on page 69 for the initial startup of the
storage expansion enclosure.
Cabling
the
dc
power
supply
Statement
29:
CAUTION:
This
equipment
is
designed
to
permit
the
connection
of
the
earthed
conductor
of
the
dc
supply
circuit
to
the
earthing
conductor
at
the
equipment.
This
equipment
is
designed
to
permit
the
connection
of
the
earthed
conductor
of
the
dc
supply
circuit
to
the
earthing
conductor
at
the
equipment.
If
this
connection
is
made,
all
of
the
following
conditions
must
be
met:
v
This
equipment
shall
be
connected
directly
to
the
dc
supply
system
earthing
electrode
conductor
or
to
a
bonding
jumper
from
an
earthing
terminal
bar
or
bus
to
which
the
dc
supply
system
earthing
electrode
conductor
is
connected.
v
This
equipment
shall
be
located
in
the
same
immediate
area
(such
as,
adjacent
cabinets)
as
any
other
equipment
that
has
a
connection
between
the
earthed
conductor
of
the
same
dc
supply
circuit
and
the
earthing
conductor,
and
also
the
point
of
earthing
of
the
dc
system.
The
dc
system
shall
not
be
earthed
elsewhere.
v
The
dc
supply
source
shall
be
located
within
the
same
premises
as
this
equipment.
v
Switching
or
disconnecting
devices
shall
not
be
in
the
earthed
circuit
conductor
between
the
dc
source
and
the
point
of
connection
of
the
earthing
electrode
conductor.
Statement
30:
62
IBM System Storage DS4000 EXP810 Storage Expansion Enclosure: Installation, User’s and Maintenance Guide
Summary of Contents for DS4000 EXP810
Page 2: ......
Page 67: ...ds470067 Figure 20 Installing a bezel Chapter 2 Installing the EXP810 39...
Page 229: ......
Page 230: ...Printed in USA GC26 7798 09...
